package com.itsu.controller;

import com.github.pagehelper.PageInfo;
import com.itsu.domain.Company;
import com.itsu.domain.Dept;
import com.itsu.service.DeptService;
import com.itsu.service.Impl.DeptServiceImpl;
import com.itsu.utils.BeanUtil;
import com.mysql.cj.util.StringUtils;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
import java.util.UUID;

@WebServlet("/system/dept")
public class DeptController extends HttpServlet {

    private DeptService deptService = new DeptServiceImpl();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String operation = req.getParameter("operation");
        if ("list".equals(operation)){
            showList(req, resp);
        } else if ("toAdd".equals(operation)) {
            toAdd(req, resp);
        } else if ("save".equals(operation)) {
            save(req, resp);
        } else if ("toEdit".equals(operation)) {
            toEdit(req, resp);
        } else if ("edit".equals(operation)) {
            edit(req, resp);
        } else if ("delete".equals(operation)) {
            delete(req, resp);
        }
    }

    private void showList(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        int pageNum = 1;
        int pageSize = 10;
        if (!StringUtils.isNullOrEmpty(req.getParameter("page"))){
            pageNum = Integer.parseInt(req.getParameter("page"));
        }
        PageInfo<Dept> pageInfo = deptService.findAll(pageNum, pageSize);

        req.setAttribute("page", pageInfo);

        req.getRequestDispatcher("/WEB-INF/pages/system/dept/list.jsp").forward(req, resp);
    }

    private void toAdd(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        List<Dept> all = deptService.findAll();
        req.setAttribute("deptList", all);
        req.getRequestDispatcher("/WEB-INF/pages/system/dept/add.jsp").forward(req, resp);
    }

    private void save(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        Dept dept = BeanUtil.fillBean(req, Dept.class);
        dept.setId(UUID.randomUUID().toString());
        System.out.println(dept);
        deptService.save(dept);
        resp.sendRedirect(req.getContextPath()+"/system/dept?operation=list");
    }


    private void toEdit(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String id = req.getParameter("id");
        Dept dept = deptService.findById(id);

        List<Dept> all = deptService.findAll();

        req.setAttribute("deptList", all);
        req.setAttribute("dept", dept);
        req.getRequestDispatcher("/WEB-INF/pages/system/dept/update.jsp").forward(req, resp);
    }

    private void edit(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        Dept dept = BeanUtil.fillBean(req, Dept.class);
        deptService.update(dept);

        resp.sendRedirect(req.getContextPath()+"/system/dept?operation=list");
    }

    private void delete(HttpServletRequest req, HttpServletResponse resp) throws IOException {
        Dept dept = BeanUtil.fillBean(req, Dept.class);
        deptService.delete(dept);

        resp.sendRedirect(req.getContextPath()+"/system/dept?operation=list");
    }


}
